C.S.
As a financial advisor, if you can't buy an investment property cash, you have no business buying it. I would advise you to see a professional financial advisor to look at your whole financial picture and work with you towards suitable investments that meet your financial goals. Those who tell you that real estate is a safe investment don't live in any of the locations across the US where real estate has recently dropped drastically. I'm in FL and most of the houses in our area aren't worth 1/2 of what they were worth in 2006.
Let me know if you have questions. I would be happy to answer some via email complimentary.
C.